Inside the invite-only social network that bills itself as the anti-Facebook. — -- It may seem the last thing the world needs is another social network, but one upstart has become a breakout hit.

I don't use Linked-In. I quickly evaluated the service a couple of years ago, but was immediately turned off by the idea of putting my contacts in the awkward position of deciding whether to opt into ...

I am involved as a co-founder in more than one company. At one, I’m helping to build a new social networking website. Here’s a question for fellow entrepreneurs: Should we launch the site as ...